#ifndef FREQ_SELECTOR_
#define FREQ_SELECTOR_
#include"label_selector.h"
class FreqSelector : public LabelSelector
{
	private:
		map<string, int> model;
	public:
		FreqSelector();
		void init(map<string, int> &query2freq);
		string getLabel(vector<QueryNode> &group);
		string getLabel(vector<string> &group);
};
#endif